builtin/ls-tree.c

   1 /*
   2  * GIT - The information manager from hell
   3  *
   4  * Copyright (C) Linus Torvalds, 2005
   5  */
   6 #include "cache.h"
   7 #include "blob.h"
   8 #include "tree.h"
   9 #include "commit.h"
  10 #include "quote.h"
  11 #include "builtin.h"
  12 #include "parse-options.h"
  13 #include "pathspec.h"
  14
  15 static int line_termination = '\n';
  16 #define LS_RECURSIVE 1
  17 #define LS_TREE_ONLY 2
  18 #define LS_SHOW_TREES 4
  19 #define LS_NAME_ONLY 8
  20 #define LS_SHOW_SIZE 16
  21 static int abbrev;
  22 static int ls_options;
  23 static struct pathspec pathspec;
  24 static int chomp_prefix;
  25 static const char *ls_tree_prefix;
  26
  27 static const  char * const ls_tree_usage[] = {
  28         N_("git ls-tree [<options>] <tree-ish> [<path>...]"),
  29         NULL
  30 };
  31
  32 static int show_recursive(const char *base, int baselen, const char *pathname)
  33 {
  34         const char **s;
  35
  36         if (ls_options & LS_RECURSIVE)
  37                 return 1;
  38
  39         s = pathspec._raw;
  40         if (!s)
  41                 return 0;
  42
  43         for (;;) {
  44                 const char *spec = *s++;
  45                 int len, speclen;
  46
  47                 if (!spec)
  48                         return 0;
  49                 if (strncmp(base, spec, baselen))
  50                         continue;
  51                 len = strlen(pathname);
  52                 spec += baselen;
  53                 speclen = strlen(spec);
  54                 if (speclen <= len)
  55                         continue;
  56                 if (spec[len] && spec[len] != '/')
  57                         continue;
  58                 if (memcmp(pathname, spec, len))
  59                         continue;
  60                 return 1;
  61         }
  62 }
  63
  64 static int show_tree(const unsigned char *sha1, struct strbuf *base,
  65                 const char *pathname, unsigned mode, int stage, void *context)
  66 {
  67         int retval = 0;
  68         int baselen;
  69         const char *type = blob_type;
  70
  71         if (S_ISGITLINK(mode)) {
  72                 /*
  73                  * Maybe we want to have some recursive version here?
  74                  *
  75                  * Something similar to this incomplete example:
  76                  *
  77                 if (show_subprojects(base, baselen, pathname))
  78                         retval = READ_TREE_RECURSIVE;
  79                  *
  80                  */
  81                 type = commit_type;
  82         } else if (S_ISDIR(mode)) {
  83                 if (show_recursive(base->buf, base->len, pathname)) {
  84                         retval = READ_TREE_RECURSIVE;
  85                         if (!(ls_options & LS_SHOW_TREES))
  86                                 return retval;
  87                 }
  88                 type = tree_type;
  89         }
  90         else if (ls_options & LS_TREE_ONLY)
  91                 return 0;
  92
  93         if (!(ls_options & LS_NAME_ONLY)) {
  94                 if (ls_options & LS_SHOW_SIZE) {
  95                         char size_text[24];
  96                         if (!strcmp(type, blob_type)) {
  97                                 unsigned long size;
  98                                 if (sha1_object_info(sha1, &size) == OBJ_BAD)
  99                                         xsnprintf(size_text, sizeof(size_text),
 100                                                   "BAD");
 101                                 else
 102                                         xsnprintf(size_text, sizeof(size_text),
 103                                                   "%lu", size);
 104                         } else
 105                                 xsnprintf(size_text, sizeof(size_text), "-");
 106                         printf("%06o %s %s %7s\t", mode, type,
 107                                find_unique_abbrev(sha1, abbrev),
 108                                size_text);
 109                 } else
 110                         printf("%06o %s %s\t", mode, type,
 111                                find_unique_abbrev(sha1, abbrev));
 112         }
 113         baselen = base->len;
 114         strbuf_addstr(base, pathname);
 115         write_name_quoted_relative(base->buf,
 116                                    chomp_prefix ? ls_tree_prefix : NULL,
 117                                    stdout, line_termination);
 118         strbuf_setlen(base, baselen);
 119         return retval;
 120 }
 121
 122 int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 123 {
 124         unsigned char sha1[20];
 125         struct tree *tree;
 126         int i, full_tree = 0;
 127         const struct option ls_tree_options[] = {
 128                 OPT_BIT('d', NULL, &ls_options, N_("only show trees"),
 129                         LS_TREE_ONLY),
 130                 OPT_BIT('r', NULL, &ls_options, N_("recurse into subtrees"),
 131                         LS_RECURSIVE),
 132                 OPT_BIT('t', NULL, &ls_options, N_("show trees when recursing"),
 133                         LS_SHOW_TREES),
 134                 OPT_SET_INT('z', NULL, &line_termination,
 135                             N_("terminate entries with NUL byte"), 0),
 136                 OPT_BIT('l', "long", &ls_options, N_("include object size"),
 137                         LS_SHOW_SIZE),
 138                 OPT_BIT(0, "name-only", &ls_options, N_("list only filenames"),
 139                         LS_NAME_ONLY),
 140                 OPT_BIT(0, "name-status", &ls_options, N_("list only filenames"),
 141                         LS_NAME_ONLY),
 142                 OPT_SET_INT(0, "full-name", &chomp_prefix,
 143                             N_("use full path names"), 0),
 144                 OPT_BOOL(0, "full-tree", &full_tree,
 145                          N_("list entire tree; not just current directory "
 146                             "(implies --full-name)")),
 147                 OPT__ABBREV(&abbrev),
 148                 OPT_END()
 149         };
 150
 151         git_config(git_default_config, NULL);
 152         ls_tree_prefix = prefix;
 153         if (prefix && *prefix)
 154                 chomp_prefix = strlen(prefix);
 155
 156         argc = parse_options(argc, argv, prefix, ls_tree_options,
 157                              ls_tree_usage, 0);
 158         if (full_tree) {
 159                 ls_tree_prefix = prefix = NULL;
 160                 chomp_prefix = 0;
 161         }
 162         /* -d -r should imply -t, but -d by itself should not have to. */
 163         if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 164             ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 165                 ls_options |= LS_SHOW_TREES;
 166
 167         if (argc < 1)
 168                 usage_with_options(ls_tree_usage, ls_tree_options);
 169         if (get_sha1(argv[0], sha1))
 170                 die("Not a valid object name %s", argv[0]);
 171
 172         /*
 173          * show_recursive() rolls its own matching code and is
 174          * generally ignorant of 'struct pathspec'. The magic mask
 175          * cannot be lifted until it is converted to use
 176          * match_pathspec() or tree_entry_interesting()
 177          */
 178         parse_pathspec(&pathspec, PATHSPEC_GLOB | PATHSPEC_ICASE |
 179                                   PATHSPEC_EXCLUDE,
 180                        PATHSPEC_PREFER_CWD,
 181                        prefix, argv + 1);
 182         for (i = 0; i < pathspec.nr; i++)
 183                 pathspec.items[i].nowildcard_len = pathspec.items[i].len;
 184         pathspec.has_wildcard = 0;
 185         tree = parse_tree_indirect(sha1);
 186         if (!tree)
 187                 die("not a tree object");
 188         return !!read_tree_recursive(tree, "", 0, 0, &pathspec, show_tree, NULL);
 189 }